Newcastle United may have to sell players before they can buy again. Indeed, FFP restraints are said to have frustrated those behind the scenes as Newcastle struggle to sign players. As a result, players are being linked with a move away as the Magpies look to raise the kind of funds that would allow them to invest again. Bruno Guimaraes and Kieran Trippier have both been tipped for exits, along with Joelinton. There is, however, better news surrounding Alexander Isak and Sven Botman. Newcastle transfer news: Alexander Isak and Sven Botman latestAccording to the Daily Telegraph, neither of the…